On average, a dog year is the equivalent of seven human years; however, dogs age much faster in the first couple of years of their lives. A dog's first year is actually equivalent to about 15 human years. More »

Dogs age at a quicker rate than humans do. The equivalent of a dog's age in human years largely depends on the size of the dog in question. One dog year can be as much as 15 years in human years. More »

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Conventional wisdom says that one dog year equals seven human years, so multiplying one's age by seven provides one's age in dog years. That ratio is regarded by many experts as a simplification, providing only a very ro... More »

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Ways in which dogs age are by slowing down, becoming gray in the face or muzzle and developing some muscle atrophy. Some dogs experience hearing loss and eyes that are cloudy or bluish. Larger-breed dogs age more quickly... More »

www.reference.com Pets & Animals Pets Dogs

According to PawNation, the idea that dogs age 7 years for every 1 human year is a myth. Not all dogs age at the same rate, so the actual method of determining a dog's age compared to a human is complicated. More »

As dogs age and become more susceptible to illness, their ability to function declines. This can affect eyesight, activity level and hearing capability. Memory loss and differences in temperament and awareness are also s... More »

A dog year is equal to seven chronological years. The "dog year" was invented to describe how dogs age faster than humans. The practical use of the dog year, however, is limited because it is an oversimplification of rea... More »